what is name this operation in android studio

Question

boolean checked = ((CheckBox) view).isChecked();

all code
public void onCheckboxClicked(View view) {
    // Is the view now checked?
    boolean checked = ((CheckBox) view).isChecked();

    // Check which checkbox was clicked
    switch(view.getId()) {
        case R.id.checkbox_meat:
            if (checked)
                // Put some meat on the sandwich
            else
                // Remove the meat
            break;
        case R.id.checkbox_cheese:
            if (checked)
                // Cheese me
            else
                // I'm lactose intolerant
            break;
        // TODO: Veggie sandwich
    }

Answer 1

view is being converted to a CheckBox object, then you are calling the isChecked() method.

The operation (CheckBox) is called casting. (Or, converting).